LOS ANGELES - Video footage from a reality television program shows that a sheriff's detective lied in court testimony and in arrest reports involving two car theft cases, according to the Los Angeles County District Attorney's office.

Prosecutors concluded that Detective Anthony Shapiro "willfully, knowingly and intentionally" made false statements when he claimed to have fully read suspects their Miranda rights, according to a memo obtained by the Los Angeles Times.

Footage shot by television cameras for the TruTV program "Bait Car" in June 2011 shows that Shapiro never fully read the suspects their rights, including to remain silent and have an attorney present during questioning, prosecutors told The Times.

But the district attorney's office declined to file criminal charges against Shapiro. It concluded that Shapiro's false statements did not amount to perjury because they did not play a key role in the decision to arrest the men or in the outcome of the preliminary hearing where Shapiro testified, according to the memo quoted by The Times.

"There's no question that he lied. It's just, can we prosecute it?" district attorney's spokeswoman Jane Robison told The Times.